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Machine Safety (ISO 13849)

Along with its TÜV certification, ECN Automation develops machine safety projects such as palletizers, de-palletizers, fillers, washers, conveyors, among others; delivering reliable projects that comply with all requirements according to regulations and norms needed according to risk analysis of each machine.

Scope

  • Risk assessment according to TÜV
  • System design
  • System detail engineering
  • Specification and selection of safety devices
  • Manufacturing of guards and screens
  • Mounting of safety devices and interlocks
  • Programming and implementation of safety control system

Applications

Safety Project involving installation of interlock perimeter guards and light curtains with controllers and instrumentation in accordance to ISO 13849.


Example of instalation of light curtains and interlocks

Machine safety norms

Safety standards hierarchy

Safety standards are structured systematically and hierarchically, to exclude different requirements for comparable hazards or similar risks or to avoid recurrence.

Safety Standard Type A

Fundamental standards related to guides and general safety aspects, referred to all machinery in the same or a similar way e.g. risk assessment.

Safety Standard Type B1

Group of standards related general safety aspects (e.g. safe distance, electrical safety, subjection/approximation speed).

Safety Standard Type B2

Group of standards related to special protection devices that can be used with machinery (e.g. shutdown devices, mesh lights, two-hand control devices).

Safety Standard Type C

Group of standards of an specific industry that set definite requirements and safety measures.

Definitions ISO 12100:2010

Risk assessment

Global process that includes a risk analysis and evaluation, typically based on team effort.

Adequate risk reduction

Risk reduction based on the safety norm rather than technology application criteria.

Evaluation and risk reduction strategy (ISO12100)

Machine features and limitations

The goal of this step is to have a clear description of:

  • Physical and mechanical properties
  • Machine’s functional capabilities
  • Its intended use and foreseeable reasonable misuse
  • Kind of environment where it might be used and receive maintenance
  • Functions of the machine (based on the machine) Use of the machine (based on tasks)

Functions of the machine (based on the machine)

Machinery can be described in terms of its different parts, mechanisms or functions based on its manufacturing such as:

  • Power feed
  • Control
  • Operation modes
  • Material intake
  • Movement / trajectory
  • Hoisting
  • Machine chassis which provides mobility/stability
  • Accessories

The use of machinery can be described in terms of the associated tasks with its intended use and the reasonably foreseeable misuse of the machine.

  • The use information provided with the machine is available
  • The fastest or easiest way in which to perform a task may be different to the tasks described in the manuals, procedures and instructions
  • Reflex behavior of a person when facing a malfunction, incident or fail when operating the machine
  • Human mistake
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